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I've ran mixture of 50/50 av gas and premium, 100% av gas, and thats how my plugs looked.

Cool Video... I need to get in touch with you and get in on some of that Sask Pow lol... As for the forum idiots, its a given that you will have three types of peeps drop by to comment. 1) those who love to sled, love to see others sledding and having fun, don't give a rats patoot what...

I'm running 13:1 on my '12 with RKTek pistons to match. I've ran 50/50 100LL (av gas), 100% 100LL, and straight premium from Shell. I've got to say that I don't think running 100LL has any benifet. I've had no detonation with straight pump fuel. Also, the sled runs hotter with RKTek parts in...

If you're coming from an Etec, I think you're just noticing the difference in motors. I've talked to a few guys who have said the Etec's power is almost 4-stroke-ish in its smooth even power, where the Polaris motor is "old school" two stroke feeling of hit you hard in the beginning, then turn...

I've got a 2" Rox Riser. I'm pretty impressed with it, hasn't moved under normal circumstances, yet in a nasty situation they have moved enough to save damaging me or the machine. I wouldn't hesitate to buy a 3" Rox if I needed more.

can anyone tell me, does the upper and lower bearing cross with industry standard bearing #6205? That is the bearing used in the 2011-12 models. I'm trying to see if I can retrofit and improve the factory system to put on my 2011 Assault Rmk...

What are your guys' running temps when these bogs are happening? I've been researching a lot about this and it seems that the Polaris computing has a "safe" system that takes action as temps near 130 degrees. It begins to limit your WOT runs and seems to cause a "bog" condition. I rode 138...

Snobyrd...What did you use for a thermostat housing gasket after you removed the thermostat? I'm going to do this mod pretty quick...as well as new EV solenoid. I'm suspecting that my injectors are fritzing also, seems that most guys with '11's have already replaced blue injectors with Yellow...

I'm thinking about it. Ride a 2011 RMK Assault, its got 2700 miles on it, new motor this winter. Was hoping Polaris would have done something with their 800 motor for 2014, but since they didn't, will be doing one of two things, 1) buy a new M8000 162, haven't had an Arctic Cat since the early...

I have the 13:1 head. My temps don't change from Sask (1600') riding to BC riding (5000-8000'). i also run 50/50 Av gas (100LL) and premium. I was wondering if RKTek's placement of the temp probe is causing the temp to read differently. Polaris has it in the center of the head, RKTek is in...

Results from the shop was the ecu had two old codes stored, an exhaust temp fault and throttle stuck fault (using the tech comments wording here). Also the TPS was out of spec and throttle cable wasn't at the proper tension. I'm going to try going for a rip this evening in our minimalist snow...

any updates from anyone? Last night I unplugged the exhaust valve hoses from the solenoid and plugged them so it works "old school" on exhaust pressure and not by solenoid. It ran awesome. I'm still looking for a few hundred more RPM as per RKTek specs on the motor after rebuilding using his...

I have an '11, love the CHASSIS. Compared to my buddies old Rev Chassis summit, it handles like a dream. I haven't rode much else to compare other than a 2011 renegade backcountry which I didn't like. We have our Assault ski stance at the narrow setting, but I believe it's still a little...

RKTek. I did pistons and a high compression head for less than some of the other "fix kit" things out there...RkTek drop in pistons are less than $400, the head is another $400...

The only thing they "need" to do is build a 160hp (at the track) bullit proof motor. The chassis is awesome in my opinion, and they don't need to do any goofy flexing to make it handle sweet. We should be more educated in a week or so...

That is pathetic. Isn't Backus Racing in the Sicamous/Mara area? We met those boys at the Saskatoon Snowmobile show, seemed like a good group of guys.

Weird...this is exactly what my sled was doing... I hope you get it figured. I have my primary fixed now, but there isn't enough snow or slope to test it in the same scenario as the mountains... If its the TPS, I'd sure like to get it looked at before next wednesday. I don't have any idle...

What were you running for weights at Renshaw? A stock sled will run 62g weights in mountains and 68 in the flats/low elevations...

Sweet. You better keep your oil resevoir full... :) Wheelying for that long without it full could give you some trouble!!!

any update?